Hearth and Home Technologies Direct Vent Gas Appliance COLBAY-FS-B - Manual (Page 32)

Page 32 10/08 Quadra-Fire • Columbia Bay • 250-5195 Rev. K
Refer to the vent graph on page 11. If your installation falls
within the range of the gray shaded area of graph, it may be
necessary to make an adjustment to the vertical damper to
improve the flame appearance in your appliance.
Figure 8.14 The shutter is located on the underside of the
appliance, on the right side. To adjust the shutter, loosen
the wingnut.. Retighten the wingnut after adjustment.
Moving the shutter bolt to the right closes the shutter. Moving
the shutter bolt to the left, will open the shutter. Opening the
shutter causes flames to become shorter and blue. Closing
the shutter creates taller orange/yellow flames.
NOTE: Do not close so much as to cause a sooty flame.
Improper adjustment can cause sooting in the firebox and/or
on the outside of a house with a horizontal termination.
After adjustment, tighten nut to lock in place.
I. Vertical Damper Adjustment
Figure 8.13 The vertical damper adjustment is located on the
right side of the unit behind the side curtain. The damper is
centered towards the top of the unit.
J. Shutter Adjustment
Make adjustment until flame size and activity suits your
personal preference, and then retighten screws on
adjustment control.
NOTE: In the Commonwealth of Massachusetts, the word
damper shall be replaced with the words flue restrictor.
Loosen screws using a Phillips screwdriver.
Pivot the vertical damper adjustor in 1/4 in. increments while
observing the flame activity.
Turn clockwise to open the damper = less flame height and
more blue in flame color.
Turn counterclockwise to close damper = increased flame
height and more yellow in flame color.
OPEN CLOSE